Comparison of the posterior distributions obtained for the retrievals of our simulated atmospheres 1 to 7 (cf. Table 2) using CROCODILE on MRCCS data alone (orange), on LRSP data (blue), and on both MRCCS+LRSP combined (green). The posterior distributions are shown as histograms of the sampled parameters and are to be read row by row for each model parameter and column by column to compare to the other input atmospheres. The input values are shown as dashed red lines. The input molecular abundances – which were calculated at chemical equilibrium and therefore vary vertically with the pressure and the temperature – are shown as functions of the atmospheric layers between 10² and 10⁻⁶ bar in logarithmic scale. The posterior distributions of the C/O ratio and metallicity Fe/H are inferred from the posterior distributions of the molecular abundances.